Please Note: this is the STA driver, not the legacy b43 driver.
1) Code: sudo apt-get install linux-source
Code: sudo apt-get install linux-headers-generic2) Then:
3) And then restart with :sudo apt-get install bcmwl-kernel-source
Code: sudo shutdown -r now4) Reboot and it should have everything working! Please report if this method doesn't work for you.